Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-09-2024 03:49

General

  • Target

    a821ce05843c06fc361ca31a8cd301d742cfe20a92b538abdc2f7b89853662e8.exe

  • Size

    4.8MB

  • MD5

    237173b3baca0dd89de8f08f87a73102

  • SHA1

    eb0fbca2301e5b15538f97358c0c305076eb9171

  • SHA256

    a821ce05843c06fc361ca31a8cd301d742cfe20a92b538abdc2f7b89853662e8

  • SHA512

    06210abc17c4240a83b46c578b78c344931edc519f389783036f17acd79780d63f9bd14bfe2813423aac4b6ccdf61606fee163ebcc9867d5b059e479994c2959

  • SSDEEP

    98304:cVeM4VwHuokyfK8PGcx2HynIiprw0F80XZeG5:6AVw6kx2SnIe84eG5

Malware Config

Signatures

  • Loads dropped DLL 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in Program Files directory 2 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a821ce05843c06fc361ca31a8cd301d742cfe20a92b538abdc2f7b89853662e8.exe
    "C:\Users\Admin\AppData\Local\Temp\a821ce05843c06fc361ca31a8cd301d742cfe20a92b538abdc2f7b89853662e8.exe"
    1⤵
    • Loads dropped DLL
    • Writes to the Master Boot Record (MBR)
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies system certificate store
    PID:3472
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3472 -s 2088
      2⤵
      • Program crash
      PID:1100
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 3472 -ip 3472
    1⤵
      PID:3920

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\{5913E078-5E5D-4172-9BD5-9D473FA076DB}.tmp\NetBridge.dll

      Filesize

      231KB

      MD5

      9d145902fb5b9a6da62ac85761434e31

      SHA1

      c817d77f59e3767d75cf5f5298d6b5711308f7e5

      SHA256

      98d795d55329b1057f4fd590468e648a8c34b620207fd9a0a6953f3e98d1ea43

      SHA512

      bbb3109bcd5ded909bfdaeb7f4f006fc5928a9bc501bad5ae8ba9805bc0d924a2c4da8bbd215480db936d663852abd9b0435fa241a40224a4cd93c4b7aff79a9

    • C:\Users\Admin\AppData\Local\Temp\{5D30DD59-529C-4c6c-80D1-CCAE604DDF8D}.tmp\7z.dll

      Filesize

      1.1MB

      MD5

      2888126384d873cc49af32bbe34bb296

      SHA1

      fe74877bcaec93c7d67dab2ce8c86cfc38402d22

      SHA256

      aba19501a8033495664879e09e60e4788537d387cf038fa8769e5b178bccdcb4

      SHA512

      f283b721b27d85fbc7a4e1e91ab1683da0c3888f632873625c4c2b48caa170471aaa84e107230988f615d3f43e40a640607d6e6f641aed59788dee441801748a